. >> our pentagon correspondent, barbara starr, has more on what's going on. barbara, what are you hearing about syria and its chemical weapons sock pyles? >> reporter: well, president obama's words, wolf, so sharp, so pointed. and it's all because over the weekend, there was disturbing new intelligence out of syria. this syrian chemical weapons site near aleppo is just ten miles from the latest fighting. one of dozens of chemical weapons sites across syria. at at least one of these sites, u.s. officials say their latest intelligence shows syrian forces over the weekend began mixing two chemicals needed to make deadly seran gas, raising significant new concern that bashar al assad may be preparing a gas attack. >> we have made our views very clear. this is a red line for the united states. i'm not going to tell grapeelle in any specifics of what we would do in terms of credible evidence that the assad regime has resorted to using chemical weapons against their own people, but suffice it to say, we are certainly planning to take action if that eventuality were